1st Term - Science (Term Test); Optics

Question 1

What branch of science is optics a sub-branch of?

Answer 1

Physics

Question 2

What is the study of optics

Answer 2

nature and interaction of light

Question 3

Explain wave-particle duality

Answer 3

When light can be both a wave & particle

Question 4

Give example of when light can be a wave and particle

Answer 4

Wave: EM Waves
Particle: Photons (through Quanta)

Question 5

What is Intensity?

Answer 5

power of light

Question 6

What is Photometry

Answer 6

the study of brightness of light

Question 7

What is Brightness

Answer 7

qualitative, visual perception

Question 8

Complete the statement:
Amplitude is directly proportional to ___

Answer 8

brightness
Ex:
1. shorter amp = dim light
2. higher amp = brighter light

Question 9

What is luminous flux

Answer 9

Amount of light from source (scattered)

Question 10

What is luminous Intensity

Answer 10

Amount of light from source in a certain direction

Question 11

What is Illuminance?

Answer 11

Amount of light reflected

Question 12

What is Luminance

Answer 12

Amount of light perceived

Question 13

In colors, what color/s are absorbed id the object is blue?

Answer 13

Everything but blue

Question 14

Complete the statement:
Colors perceived = ___

Answer 14

light reflected

Question 15

Complete the analogy:
White = reflects all
Black = ?

Answer 15

Absorbs all

Question 16

The 2 types of color mixing are?

Answer 16

Additive Color Mixing & Subtractive Color Mixing

Question 17

What is the difference between additive and subtractive color mixing?

Answer 17

Additive color mixing - lights
Subtractive color mixing - pigments

Question 18

What are the primary colors in additive color mixing? And what color does it make when you combine all of them together?

Answer 18

RGB (Red, Green, Blue) & creates white

Question 19

What are the primary colors in subtractive color mixing? And what color does it make when you combine all of them together?

Answer 19

CYMK (Cyan, Yellow, Magenta, Black) & created black

Question 20

What are the 2 cells found in the retina that distinguishes color?

Answer 20

Rods & Cones

Question 21

Which cells can distinguish colors? Which cannot?

Answer 21

Rods cannot distinguish, Cones can

Question 22

What are the colors that cones can identify?

Answer 22

RGB

Question 23

What are the 4 interactions of light?

Answer 23

Reflection, Refraction, Absorption, and Dispersion

Question 24

What is reflection

Answer 24

bouncing back of light off a reflective surface

Question 25

2 kinds of reflection

Answer 25

Specular & Diffuse

Question 26

What are the 2 laws of reflection?

Answer 26

1. Angle of incidence = angle of reflection 2. Incident ray, reflected ray, and normal all lie in the same plane

Question 27

What is the difference between a plane and spherical mirror?

Answer 27

A plane mirror has a flat surface, while a spherical mirror is curved/sphere

Question 28

What are the 2 types of spherical mirrors?

Answer 28

Concave & Convex

Question 29

What is the shape of each spherical mirror?

Answer 29

Concave - curved inwards the direction of IR Convex - bulges outward the IR

Question 30

What is the difference between Real & Virtual images in reflection?

Answer 30

Real - converge, inverted, projected on a screen Virtual - diverge (appears formed behind the mirror), upright, appear on mirror or lens

Question 31

How would you describe the image of a plane mirror?

Answer 31

Virtual, upright, same size, same distance, & laterally reversed

Question 32

What is the center of curvature?

Answer 32

center from the sphere

Question 33

What is the middle of the mirror calles?

Answer 33

Vertex

Question 34

What is the radius of curvature?

Answer 34

Distance of the Vertex to the Center of Curvature (radius)

Question 35

What is the optical axis?

Answer 35

A line that intercepts the CoC, V and F

Question 36

What do you call the width of mirror?

Answer 36

Aperture

Question 37

What is the principal focus?

Answer 37

Concave - where rays meet Convex - where rays seem to meet

Question 38

What is focal length?

Answer 38

distance from focus and center of curvature (1/2 of radius of curvature)

Question 39

Ray Diagram Rules: What is Case 1?

Answer 39

If the IR is parallel to the optical axis, then the RR passes through the foucus

Question 40

Ray Diagram Rules: What is Case 2?

Answer 40

If the IR passes through the center of curvature, RR reflects back through C

Question 41

Ray Diagram Rules: What is Case 3?

Answer 41

If the IR passes through the focus, then the RR is parallel to the optical axis